<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <!-- 1. 安装 vue-router 路由模块 -->
    <script src="https://cdn.bootcss.com/vue-router/3.1.3/vue-router.js"></script>
</head>
<body>
    <div id="app">
        <router-link to="/login">登录</router-link>
        <router-link to="/register">注册</router-link>
        <router-view></router-view>
    </div>

    <script>

        var login = {
            template: '<h3>这是登录子组件，这个组件是 罗more 开发的</h3>'
        }

        var register = {
            template: '<h3>这是登录子组件，这个组件是 吴more 开发的</h3>'
        }

        var router = new VueRouter({
            routes: [
                {path: '/login',component: login},
                {path: '/register',component: register},
                {path: '/',redirect: '/login'}
            ],
            linkActiveClass: 'myactive'
        })
        var vm = new Vue({
            el: '#app',
            data: {

            },
            methods: {

            },
            router: router,
            watch: {
                // this.$route.path
                '$route.path': function(newVal,oldVal) {
                    // console.log(newVal,oldVal)
                    if(newVal === '/login') {
                        console.log('欢迎进入登录页面')
                    }else if(newVal === '/register') {
                        console.log('欢迎进入注册界面')
                    }
                }
            }
        });
    
    </script>
</body>
</html>
